William s



W. S.'GOULD.

SEPARATOR FOR STORAGE BATTERY PLATES.

APPLICATION FILED MAR. 14, 1914.

1 7 l 95 924. Patented Aug. 22, 1916.

v F 0000000, 0000 000 DD 7 0000000 0000 O0 0 1 OOOocouOoo w/ms-sis WILLIAM S. GOULD, OElt'EW YORK, NZ Y.

SEIPABATOB FOR STORAGE-BATTERY ELdTES.

Specification of Letters Patent.

Patented nag. 22, rate.

Application filed March 1 1914. Serial No. 824,665.

My invention relates to separators forv storage battery plates, and in itsbroadest aspects, has to do with a composite separator of which a portion is porous to the electro lyte and has the necessary insulating qualities, while another portion is inert to the electrolyte and'therefore gives strength to the separator and maintains it in position during its use in the battery.

Specifically, the inventlon relates to a separator which comprises a sheet of wood which is more or less acid deteriorating, smooth on one side and provided with ribs on the other, and of a perforated member which is inert to the electrolyte, and which has ribs on one side thereof, while it is smooth on the other side.

I will set forth in detail one embodiment of my invention int-he following description taken in connection with the attached drawings, in which- Figure 1 shows a wood member in elevation; Fig. 2 shows a rubber member in elevation; and Fig. 3 shows a section of the separator.

The separator comprises a perforated rubber sheet 1 with vertical ribs on one side, as shown in Fig. 2, and a wood member 2, also with ribs at on one side, as shown in Fig. 1. The ribbed sides of the two are placed together so that the ribs of each are on the inside of the couple. The fiat side of the rubber sheet is preferably placed against the positive plate and the flat side of the wood sheet against the negative plate. This arrangement may be reversed, but that described is preferable. The ribs of the two sheets are staggered relatively to each other so that the ribs of rubber engage the web of the wood, and the ribs of wood engage the web of the rubber sheet, as all the ribs project from the sheets about the same distance. The mechanical separation is maintained by the rubber ribs, that is, while at the beginning the separation is efiected equally by both sets of ribs, the rubber ones are durable and maintain the desired'separation, so that should the battery plates buckle the rubber sheet will positively prevent them coming together to produce a short circuit between them. The wood ribs are mainlyfor the mechanical strength of the wood itself prior to the time it is placed in the cell. The wood ribs, however, also perform the function of maintaining the acidfspaces between the Wood and rubber and of holding both wood and rubber flat against their respective plates, the wood sheet serving to hold the spongy or active material in place at all points while still permitting of access of the electrolyte thereto at 'practically'all points because of the porous character of the wood.

By the use of my invention the strength and durability of a rubber separator are secured while the impervious-to-batterysediment or superior insulating qualities of wood are also secured. Preferably, the holes in the rubber sheet are smaller .in diameter than the separation distance between the wood and rubber webs and as that separation distance is maintained by the rubber ribsany sediment that works through the holes will fall away in the wider acid channel without any deleterious efiect on the cell.

Having described my invention, what I claimas new and desire to secure by Letters Patent is v 1. A separator for storage battery plates, comprising a perforated'hard rubber sheet having a flat faceto be placed against the positive plate and a porous wood sheet having a flat face to be placed against the negative plate to hold the spongy material thereof in place, said wooden sheet having ribs for spacing it from the rubber sheet to provide circulation channels between the separator sheets and hold them flat against the battery plates.

2. A separator for storage battery plates comprising a perforated hard rubber sheet having a flat face to be placed against one battery plate and a porous wood sheet hav ing a flat face to be placed against theother battery plate, said rubber sheet having reinforcing ribs for spacing it from the wooden sheet to provide circulation channels be tween the separator sheets and hold them flat against the battery plates.

A separator for storage battery plates comprising a perforated hard rubber sheet placed adjacent the positive plate and a poice rous wood sheet having a flat face placed against the negative plate to hold the spongy material thereon in place, said rubber sheet having vertical reinforcing ribs.

4. A separator for storage battery plates comprising a porous Wood sheet, having a substantially flat face adapted to be placed against the active material of one of the battery plates to hold it in place and a hard rubber sheet adapted to be interposed between the Wood sheet and the other batteryplate, and adapted to prevent short circuits between the plates due to their buckling and hold-thewood sheet in posi tion.

A separator for storage battery plates comprising a sheet of porous material per vious to the electrolyte, adaptedto be placed against the active material of one of the battery plates to hold it in place and a sheet of hard insulating material having openings therein and adapted to-be interposed between the sheet of porous material.

and the other battery plate, and adapted to prevent short circuits between the plates clue to buckling.

G. A. separator forbattery plates coinprising a sheet of flexible porous material pervious to the electrolyte, and a perforated sheet of hard insulating material, one of said sheets having ribs for spacing the body portions of the sheets from one an other, and holdingthe porous sheet flat against the active material of one of the battery plates and said sheet of insulating material being ada 'iteil to prevent short circuits liietween the plates due to buckling.

7. A separator for battery plates com prising a sheet of flexible porous material pervious to the electrolyte, and a perforated sheet or hard insulati. material, said sheets spaced. apart ribs for holding; the body portions of the sheets in position spaced rrom one another, the number of ribs on the porous sheet being reater than the number of ribs on the sheet of insulat ing material.

A separator ittery plates coinprising a sheet of flexible porous material pervious to the electrolyte, and a perforated sheet of hard insulati 2 material, one of said sheets having rii tor spacing the body portions of the sheets from one another, and holding the porous sheet flat against the active material of one of the battery plates, the diameter of tie perforations in the sheet of insulating material being less thanv the distance across the space between the body portions of the sheets.

9. A separator for battery plates comprising a. hard rubber sheet and a porous Wood sheet, both fiat on the outside Where they engage the plates, and spaced from one another to provide circulation space for the electrolyte therebetween and said rubber sheet having strengthening ribs to prevent short circuits between the plates clue to buckling.

10. A separator for storage battery plates comprising a sheet of porous material per vious to the electrolyte adapted to be placed against the active material of one of the bat tery plates and a sheet of hard insulating -material adapted to be interposerl between the sheet of porou material and the other battery plate, said sheet of insulating terial being provided with ribs at its edges which prevent the buckling of the battery plates from causing short circuits between the plate and also space the body of the in sulating sheet from the porous sheet;

11. A separator for storage battery plates comprising a porous Wood sheet pervious to the electrolyte adapted to be placed. against the active material of one of battery plates and a perforated hard rubber sheet adapted to be interposed betwe a the Wood.

sheet and. the other battery plate ed to prevent short circuits be plates due to bu kling.

A separa rit'or b comprising a sheet 0:. vious the electrolyte, against t 1e active niatei tery plates to aid in. and a sheet of ha y 1 adapted to be interposeu a of porous material of the o plate, to prevent buel o' ph. from causing short circuits, esneet l ing provided with ribs towa the other sheet, bold said sheets in EJ1 09 1 spaced relation.

In testimony wh-i name to this spec of two subscribing" a" Nnw'ron it. Enncnss, LoWIN 

